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DataRecordingRequirements. Logbookentriesweremadeofvoltage signal vs H2 0 head, control band, repeatability on at least ten water feed cycles, level safety signal set points and timing circuit functions. No data sheets. Values and Tolerances. Signal Voltage Range Accuracy Hysteresis ControlBand LowLevelSafety High Level Safety FeedTime Limit FeedCycleLimit Digital readout + 1 mV 0-2.69 kN/m2 (0.32 psi) 0-5 Vdc + 25 N/m2 (0.036 psi) + 62 N/m2 (0.09 psi) 2 1.12-1.25kN/m (0.15-0.18psi) 0.75 kN/m2 (0.11psi) 1.5 kN/m2 (0.22 psi) 12+1sec. 10+ 1min. Results. Therangecalibrationofthereservoirtransducerisshown in Figure 20 as signal voltage of the transducer versus static head pressure. This figure shows the hystersis to be approximately 0.008 psi or 55 N/m2. The values of control and safety set points are those given above. 3.2.4 TemperatureControls,IndicatorsandSafeties Conditions. Each thermistor probe was calibrated by immersion in a controlledtemperaturewaterbath. Endtoendvoltagesignalvs. temperature was measured and all set points verified. Data Recording Requirements. Log book entries were made of tempera- tures, voltages, and set points. No data sheets. Values and Tolerances. Temperature measurementsweremade with cali- brated mercury thermometers and voltages with a + 1 my digital volt- meter. Thefollowingisalistofvaluesandtolerancesforthe individual temperature sensors.PDF Image | WATER ELECTROLYSIS SYSTEM REFURBISHMENT
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